CN110239391B - Charging method and charging pile system suitable for electric automobile - Google Patents
Charging method and charging pile system suitable for electric automobile Download PDFInfo
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- 238000012360 testing method Methods 0.000 claims description 3
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a charging method and a charging pile system suitable for an electric automobile, and belongs to the field of power supply of vehicle auxiliary devices. The method comprises the following steps: (1) detecting physical connection between the vehicle and the charging pile; (2) if the physical connection detection is qualified, acquiring vehicle information and account information corresponding to the vehicle, authenticating the vehicle, and if the vehicle information and the account information corresponding to the vehicle meet the requirements, performing insulation detection on the charging pile; (3) when the insulation detection of the charging pile is normal, vehicle information is obtained again, the obtained vehicle information is compared with the vehicle information obtained in the step (2), and if the obtained vehicle information is different from the vehicle information obtained in the step (2), charging is stopped; (4) if the voltage is the same as the voltage, starting charging; (5) and after charging, automatically shutting down and unlocking to perform accounting and settlement. According to the method, the vehicle information is confirmed twice, so that the accuracy of the vehicle information is ensured, and the charging reliability is improved.
Description
Technical Field
The invention relates to a charging method and a charging pile system suitable for an electric automobile, and belongs to the field of power supply of vehicle auxiliary devices.
Background
In the popularization process of electric vehicles, the construction and popularization of charging facilities are extremely important. The existing charging pile adopts a wired connection mode with a charging connector at present, the charging mode is mainly divided into a charging card, a mobile phone APP, a user account and the like, and manual operation is required. In specific use scenes, such as time-sharing leasing, private pile matching, operation motorcade, community property, public charging station and the like, the manual operation is more complicated, errors are easy to occur, and manpower is consumed.
In recent years, charging has been gradually intelligentized, for example, chinese patent document with publication number CN 102110994B discloses a charging management system and a charging method for an electric vehicle, which implement various intelligent management, such as vehicle identification code identification, user identity identification, vehicle loss, fee payment and battery power management, but the system only performs one-time identification during vehicle identification, and in many cases, information obtained by one-time identification is often inaccurate, such as incorrect information caused by errors in information transmission or image identification during vehicle identification through the vehicle identification code, and reliability of a charging pile is reduced.
Disclosure of Invention
The invention aims to provide a charging method suitable for an electric automobile, which is used for solving the problems that an existing intelligent charging mode only identifies a vehicle once, information is inaccurate and charging reliability is low under the condition that identification is wrong, and meanwhile, a charging pile system is also provided and is used for solving the problems that the existing charging pile system only identifies the vehicle once, information is inaccurate and charging reliability is low under the condition that identification is wrong.
In order to solve the above problems, the present invention provides a charging method for an electric vehicle, comprising the following steps:
(1) detecting physical connection between the vehicle and the charging pile;
(2) if the physical connection detection is qualified, acquiring vehicle information and account information corresponding to the vehicle, authenticating the vehicle, and if the vehicle information and the account information corresponding to the vehicle meet the requirements, performing insulation detection on the charging pile;
(3) when the insulation detection of the charging pile is normal, vehicle information is obtained again, the obtained vehicle information is compared with the vehicle information obtained in the step (2), and if the obtained vehicle information is different from the vehicle information obtained in the step (2), charging is stopped;
(4) if the voltage is the same as the voltage, starting charging;
(5) and after charging, automatically shutting down and unlocking to perform accounting and settlement.
According to the method, the primary vehicle information is acquired after the physical connection detection is qualified, the primary vehicle information is acquired after the insulation detection is normal, the two acquired vehicle information are compared, if the two pieces of vehicle information are the same, the charging is started, and the vehicle information is confirmed twice, so that the accuracy of the vehicle information is ensured, and the charging reliability is improved.
Further, the charging method further comprises the step of carrying out self-checking on the charging pile after the physical connection is detected to be qualified, wherein the self-checking comprises the step of detecting the running state of the charging pile.
The charging process is continued only under the condition that the operation state of the charging pile is normal, if the charging pile has a fault, the follow-up steps are continued, and time and resources are wasted, so that the normal operation of charging is guaranteed in the self-checking process, and the efficiency is further improved.
Further, the charging in the step (4) includes pre-charging and formal charging, the pre-charging includes detecting a battery terminal voltage and a contactor of the charging pile, and if the battery terminal voltage is not within an allowable range or the contactor of the charging pile fails, the charging is stopped.
The method comprises the steps of pre-charging the vehicle before formal charging, wherein the pre-charging mainly comprises the steps of detecting the terminal voltage of the battery and detecting a contactor of a charging pile, closing the contactor of the charging pile when the terminal voltage of the battery meets the requirement of the output voltage of the charging pile, and beginning formal charging when the contactor has no fault so as to ensure the normal operation of charging and the charging safety.
Further, the formal charging includes detecting the terminal voltage of the battery and the current passing through the battery in real time after the pre-charging is finished, and stopping the charging if the terminal voltage of the battery or the current passing through the battery exceeds a corresponding set threshold.
In the formal charging process, the terminal voltage of the battery and the current passing through the battery are detected in real time, and if the voltage is too high or the current is too large, the charging is stopped in time, so that the damage of overcurrent and overvoltage to the battery is avoided, and the safety of the battery is ensured.
In addition, a charging pile system is further provided, and comprises a charging pile, wherein a charging interface, a first communication interface used for communicating with a vehicle and a second communication interface used for communicating with a platform are arranged on the charging pile; when insulation detection of the charging pile is normal, the charging pile acquires the vehicle information again through the first communication interface, compares the acquired vehicle information with the vehicle information acquired last time, and stops charging if the acquired vehicle information is different from the vehicle information acquired last time; if the voltage is the same as the voltage, starting charging; and after charging, automatically shutting down and unlocking to perform accounting and settlement.
The system acquires primary vehicle information after physical connection detection is qualified, acquires primary vehicle information after insulation detection is normal, compares the two acquired vehicle information, starts charging if the two pieces of vehicle information are the same, and ensures the accuracy of the vehicle information and improves the reliability of the charging by confirming the vehicle information twice.
Further, charging pile carries out self-checking after physical connection detects qualifiedly to whether the running state that detects charging pile self is normal.
The charging process is continued only under the condition that the operation state of the charging pile is normal, if the charging pile has a fault, the follow-up steps are continued, and time and resources are wasted, so that the normal operation of charging is guaranteed in the self-checking process, and the efficiency is further improved.
Further, the charging includes pre-charging and formal charging, the pre-charging includes detecting the battery terminal voltage and a contactor of the charging pile, and if the battery terminal voltage is not within an allowable range or the contactor of the charging pile fails, the charging is suspended.
The method comprises the steps of pre-charging the vehicle before formal charging, wherein the pre-charging mainly comprises the steps of detecting the terminal voltage of the battery and detecting a contactor of a charging pile, closing the contactor of the charging pile when the terminal voltage of the battery meets the requirement of the output voltage of the charging pile, and beginning formal charging when the contactor has no fault so as to ensure the normal operation of charging and the charging safety.
Further, the formal charging includes detecting the terminal voltage of the battery and the current passing through the battery in real time after the pre-charging is finished, and stopping the charging if the terminal voltage of the battery or the current passing through the battery exceeds a corresponding set threshold.
In the formal charging process, the terminal voltage of the battery and the current passing through the battery are detected in real time, and if the voltage is too high or the current is too large, the charging is stopped in time, so that the damage of overcurrent and overvoltage to the battery is avoided, and the safety of the battery is ensured.
Drawings
FIG. 1 is a schematic diagram of a charging pile electrical system of the present invention;
FIG. 2 is an overall flow diagram of the present invention;
FIG. 3 is a flow chart of the physical connection detection of the present invention;
FIG. 4 is a flow chart of the self-test of the charging pile according to the present invention;
FIG. 5 is a flow chart illustrating the charge start confirmation according to the present invention;
FIG. 6 is a flow chart of charge start reconfirmation according to the present invention.
Detailed Description
Charging pile system embodiment:
the charging pile system comprises a charging pile shown in fig. 1, and the charging pile comprises an off-board charger, a charging interface (namely a charging plug), a first communication interface (not shown in fig. 1) for communicating with a vehicle, and a second communication interface (not shown in fig. 1) for communicating with a platform. Certainly, in order to ensure the normal operation of the charging pile, the charging pile further comprises a power module, an off-board charger controller, a direct-current power supply loop and a low-voltage auxiliary power supply loop. The direct current power supply loop is provided with direct current contactors K1 and K2 in series, and the low-voltage auxiliary power supply loop is provided with auxiliary power contactors K3 and K4 in series. The power module is used for converting alternating current into direct current, the off-board charger controller is used for monitoring the states of the direct current contactors K1 and K2 and the auxiliary electric contactors K3 and K4, the connection relation of the charging piles is shown in the prior art in figure 1, and the invention is not described in a too large way.
The work flow of the charging pile system is shown in fig. 2, and specifically comprises the following steps:
1) and (4) parking and gun inserting and physical connection detection.
As shown in fig. 3, the main function of the physical connection detection stage is to detect whether the charging plug of the charging pile is completely connected to the charging socket of the electric vehicle (i.e. vehicle), and when the charging socket of the electric vehicle is connected to the charging plug of the charging pile, the vehicle and the charging pile will be awakened. Charging pile is used for carrying out physical detection on charging plug and charging socket, as shown in fig. 1, charging pile periodically samples detection point 1 to obtain voltage value, when voltage value is 4V, charging plug and charging socket are completely connected, physical connection detection is qualified, and charging pile allows charging only in this state. According to the standard specification, the voltage range is judged to be plus or minus 0.8V of the nominal voltage, and the current sampling voltage is allowed to be charged within the range of [3.3V and 4.7V ] due to the consideration of the processing on the sampling boundary, otherwise, the charging is not allowed.
2) And (6) self-checking the charging pile.
When the physical connection is detected to be qualified, as shown in fig. 4, the charging pile starts to close the alternating current contactor (Kp in fig. 1), and the charging pile performs self-detection. The charging pile self-detection aims at detecting the running state of the charging pile and detecting whether the charging pile meets the charging requirement, a charging pile main controller mainly detects other charging pile components through information interaction or state, the charging pile main controller comprises the running states and communication conditions of components such as a slave controller, a power module and various contactor states used in the charging pile, and charging is stopped if the running state of the charging pile is abnormal; if the communication between the charging pile and the platform (or the station level monitoring platform) is interrupted, prompting that the charging pile cannot automatically deduct the fee, and only supporting an off-line transaction mode (such as a payment card) to perform charging service; and if the self-checking of the charging pile is completed and the running state is normal, carrying out the following steps.
3) A confirmation phase is initiated.
As shown in fig. 5, after the self-check is passed, the charging pile acquires vehicle information through the first communication interface within a period of time (set to 5s in this embodiment), and sends the acquired vehicle information to the platform through the second communication interface, the platform authenticates the vehicle, detects whether the vehicle is only registered, if so, acquires account information corresponding to the vehicle, and if the vehicle is already registered and the account balance is sufficient, the platform replies vehicle confirmation information to the charging pile, and the charging pile receives the vehicle confirmation information, namely, the following steps are performed; and if the vehicle is not registered or the balance corresponding to the vehicle is insufficient, the platform sends a charging stopping instruction, and the charging pile stops charging.
The vehicle information used by the invention is the VIN code of the vehicle, and CAN also identify the license plate at the same time, the license plate identification comprises various modes such as video, infrared and the like, the first communication interface CAN be in communication modes such as wireless communication, CAN communication and the like, but only CAN use the CAN communication mode, the charging flow and the handshake message need to be changed, for example, in BHM (car handshake message) messages, the vehicle information field is added, but the change cost is lower, the technology is mature, and the invention is safe and reliable. The present invention is therefore not limited to the vehicle information obtained and the means by which the vehicle information is obtained.
4) Fill electric pile and carry out insulation detection.
After the start confirmation phase passes, as shown in fig. 1, the charging pile closes the auxiliary electrical contactors K3 and K4 to conduct the low-voltage auxiliary power supply loop, then closes the direct-current contactors K1 and K2, and simultaneously sends a charging handshake message to obtain the maximum allowable charging voltage of the vehicle battery and the rated voltage of the power supply equipment, and starts to perform insulation monitoring. The output voltage (the voltage measured at the voltage measurement in fig. 1) during insulation monitoring should be the smaller value of the highest allowable charging voltage and the rated voltage of the power supply equipment in the charging handshake message, and after the insulation detection is normal, the following steps are performed; if the insulation detection is not normal, the charging is stopped.
5) A reconfirmation phase is initiated.
As shown in fig. 6, when the insulation detection of the charging pile is normal, the charging pile acquires a correct BRM message (namely, a BMS and a vehicle identification message) through the first communication interface again, that is, a vehicle VIN code is acquired, the charging pile compares the vehicle VIN code acquired this time with the vehicle VIN code acquired in step 3), and if the vehicle VIN codes acquired two times are the same, the following steps are performed; if not, the charging is stopped.
6) The charging phase is initiated.
The charging phase comprises two parts, namely a pre-charging phase and a formal charging phase.
When the charging pile receives the BRO message (namely the battery charging is ready), vehicle information is checked to pass in the starting and reconfirming stage, and then the vehicle information enters the pre-charging stage, wherein the pre-charging comprises the steps of detecting the terminal voltage of the battery and detecting a contactor of the charging pile.
As shown in fig. 1, the charging pile samples the voltages outside the dc output contactors K1 and K2 (i.e. the voltages at the voltage measurement in fig. 1), and the error between the sampled voltages and the battery terminal voltage in the BCP message (i.e. the charging parameter of the power battery) should be within an allowable range (i.e. between the maximum and minimum output voltages of the charging pile), if any one of the conditions is not met, the charging is stopped, and the abnormal warning of the battery terminal voltage is sent.
When the two conditions are met simultaneously, the charging pile starts, namely, when the output voltage of the charging pile is detected to be smaller than the voltage of the battery end and-10V is smaller than or equal to the voltage of the charging pile-the voltage of the battery end is smaller than or equal to-1V, the direct current contactors K1 and K2 are closed, the state information of the direct current contactors K1 and K2 is collected through feedback signals of the contactors K1 and K2, if the state signals of the contactors K1 and K2 are collected to be in an off state, the direct current contactors K1 and K2 are considered to be in a fault state of refusing to operate, the charging pile stops charging, and the charging pile is uploaded to the platform direct current output contactors K1 and K2 to be in a fault state. And if all the CRO messages meet the requirements, sending CRO messages (namely the output ready state of the charger) and waiting for entering a formal charging stage.
In the formal charging stage, after the charging pile receives a BCL message (namely a battery charging requirement) and a BCS message (a battery charging total state), the power output of the charging pile is adjusted according to the required voltage and the required current in the BCL message.
In the formal charging process, a charging pile periodically detects self faults and charging amount, detects a battery charging prohibition sign in a BSM (namely power battery state information), and according to a battery highest allowable charging threshold in a BCP message (namely power battery state parameters); monitoring the battery state during charging and detecting the condition of the battery, wherein the battery state mainly comprises the terminal voltage of the battery and the current passing through the battery. And in the whole formal charging process, the required voltage and current sent by the BMS are ensured to be lower than the highest allowable charging voltage and the highest allowable charging current, and if the voltage and the current are abnormal or the charging pile is in fault or the amount of money is insufficient, the charging end stage is started.
7) And after charging, automatically shutting down and unlocking to perform accounting and settlement.
After charging, stopping power output, detecting whether the charger is in a standby state within 10S or not, or detecting that the current is reduced to be below 5A, and disconnecting direct current output contactors K1 and K2; if the system is not shut down, a fault shutdown phase is entered, and the alternating current contactor (Kp in figure 1) is directly opened.
After the charging pile receives a BSD message (namely BMS statistical data) or sends a CEM message (namely a charger error message), the auxiliary electric contactors K3 and K4 are disconnected after the charging pile is prolonged by 1s, and then the electronic lock is disconnected (the electronic lock is installed in a charging plug of the charging pile). And after delaying for 5s, if the electronic lock is not unlocked successfully, unlocking for the second time. And if the electronic lock is not successfully unlocked twice, the power-on electronic lock fails. The charge settlement phase is started.
The charging pile generates a charging record, uploads the charging record to the platform and updates the platform account information in time; if the communication interruption between the charging pile and the platform is detected, the charging record is locally stored in the charging pile; and when the communication with the platform is normal, the charging record is uploaded to the operation platform again.
The system realizes the charging process of the system without changing the charging process specified by the existing GB/T18487.1-2015 and GB/T27930-2015 international protocols, and has high charging reliability.
The embodiment of the charging method applicable to the electric automobile comprises the following steps:
the charging method suitable for the electric automobile comprises the following steps:
(1) detecting physical connection between the vehicle and the charging pile;
(2) if the physical connection detection is qualified, acquiring vehicle information and account information corresponding to the vehicle, authenticating the vehicle, and if the vehicle information and the account information corresponding to the vehicle meet the requirements, performing insulation detection on the charging pile;
(3) when the insulation detection of the charging pile is normal, vehicle information is obtained again, the obtained vehicle information is compared with the vehicle information obtained in the step (2), and if the obtained vehicle information is different from the vehicle information obtained in the step (2), charging is stopped;
(4) if the voltage is the same as the voltage, starting charging;
(5) and after charging, automatically shutting down and unlocking to perform accounting and settlement.
The implementation process of the charging method specifically applicable to the electric vehicle has already been introduced in the charging pile system embodiment, and is not described herein again.
Claims (8)
1. A charging method suitable for an electric automobile is characterized by comprising the following steps:
(1) detecting physical connection between the vehicle and the charging pile;
(2) if the physical connection detection is qualified, acquiring vehicle information and account information corresponding to the vehicle, authenticating the vehicle, and if the vehicle information and the account information corresponding to the vehicle meet the requirements, performing insulation detection on the charging pile;
(3) when the insulation detection of the charging pile is normal, vehicle information is obtained again, the obtained vehicle information is compared with the vehicle information obtained in the step (2), and if the obtained vehicle information is different from the vehicle information obtained in the step (2), charging is stopped;
(4) if the voltage is the same as the voltage, starting charging;
(5) and after charging, automatically shutting down and unlocking to perform accounting and settlement.
2. The charging method suitable for the electric automobile according to claim 1, further comprising a step of performing self-test on the charging pile after the physical connection is detected to be qualified, wherein the self-test comprises detecting the operation state of the charging pile.
3. The charging method for an electric vehicle according to claim 1 or 2, wherein the charging in step (4) includes pre-charging and formal charging, the pre-charging includes detecting a battery terminal voltage and a charging post contactor, and the charging is suspended if the battery terminal voltage is not within an allowable range or the charging post contactor fails.
4. The charging method for electric vehicles according to claim 3, wherein the formal charging comprises real-time detecting the terminal voltage of the battery and the current passing through the battery after the pre-charging is finished, and stopping the charging if the terminal voltage of the battery or the current passing through the battery exceeds a corresponding set threshold.
5. A charging pile system comprises a charging pile, wherein a charging interface, a first communication interface used for communicating with a vehicle and a second communication interface used for communicating with a platform are arranged on the charging pile, and the charging pile is characterized in that when a charging socket of the vehicle is connected into the charging interface of the charging pile, the charging pile is used for carrying out physical detection on the charging socket and the charging interface; when insulation detection of the charging pile is normal, the charging pile acquires the vehicle information again through the first communication interface, compares the acquired vehicle information with the vehicle information acquired last time, and stops charging if the acquired vehicle information is different from the vehicle information acquired last time; if the voltage is the same as the voltage, starting charging; and after charging, automatically shutting down and unlocking to perform accounting and settlement.
6. The charging pile system according to claim 5, wherein the charging pile performs self-inspection after the physical connection detection is qualified, so as to detect whether the operation state of the charging pile is normal.
7. The charging pile system according to claim 5 or 6, wherein the charging includes pre-charging and formal charging, the pre-charging includes detecting a battery terminal voltage and a charging pile contactor, and the charging is suspended if the battery terminal voltage is not within an allowable range or the charging pile contactor fails.
8. The charging pile system according to claim 7, wherein the formal charging includes real-time detection of the battery terminal voltage and the current passing through the battery after the pre-charging is completed, and the charging is suspended if the battery terminal voltage or the current passing through the battery exceeds a corresponding set threshold.
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| CN110682825B (en) * | 2019-10-14 | 2020-09-04 | 北京嘀嘀无限科技发展有限公司 | Safe charging method, storage medium, electronic device and system |
| CN112744112B (en) * | 2019-10-30 | 2022-12-27 | 宁波三星智能电气有限公司 | Charging method and system of AC/DC universal charging pile based on Internet of things |
| CN112744092B (en) * | 2019-10-30 | 2022-12-20 | 宁波三星智能电气有限公司 | Charging method and system of AC/DC universal charging pile |
| CN111086409B (en) * | 2019-12-23 | 2022-12-27 | 宁波三星智能电气有限公司 | Charging start-stop control method for intelligent charging pile |
| CN110954798B (en) * | 2020-02-25 | 2020-06-23 | 深圳市永联科技股份有限公司 | Insulation detection starting judgment method and circuit for off-board charger |
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| CN111301173B (en) * | 2020-04-09 | 2023-12-15 | 宁德时代新能源科技股份有限公司 | Load access detection method, switch circuit and battery management system |
| DE102020120383A1 (en) * | 2020-08-03 | 2022-02-03 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Method for charging a traction battery of a motor vehicle |
| CN112305384A (en) * | 2020-10-14 | 2021-02-02 | 许继电源有限公司 | Charging pile multiple insulation detection control method and system |
| CN113162155A (en) * | 2021-03-31 | 2021-07-23 | 武汉路特斯汽车有限公司 | Charging switching method and system of electric automobile and vehicle |
| CN114655059B (en) * | 2021-05-21 | 2024-05-07 | 北京新能源汽车股份有限公司 | Charging control method and device and electric automobile |
| CN113484701B (en) * | 2021-06-03 | 2024-01-26 | 度普(苏州)新能源科技有限公司 | Insulation detection method, insulation detection device, computer readable storage medium and processor |
| CN113743925A (en) * | 2021-08-20 | 2021-12-03 | 许昌许继软件技术有限公司 | Charging pile electricity charge calculation method and system |
| DE102022106786A1 (en) | 2022-03-23 | 2023-09-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Computer-implemented method for carrying out a charging process for a drive battery of a motor vehicle at a charging port |
| CN114987268A (en) * | 2022-07-18 | 2022-09-02 | 石家庄科林电气股份有限公司 | Electric bicycle charging method based on power line carrier communication |
| CN117087463A (en) * | 2022-11-11 | 2023-11-21 | 武汉路特斯科技有限公司 | Vehicle pile charging method, charging system, charging pile, charging vehicle and storage medium |
| CN116901769B (en) * | 2023-05-30 | 2024-04-30 | 江苏大孚集成装备科技有限公司 | Superhigh pressure fills electric pile |
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| JP6421095B2 (en) * | 2015-08-05 | 2018-11-07 | 株式会社オートネットワーク技術研究所 | Repeater |
| CN106882068B (en) * | 2017-03-08 | 2018-10-12 | 广州车电网新能源有限公司 | A kind of the electric vehicle automatic recognition system and method for alternating-current charging pile |
| CN107499166B (en) * | 2017-08-31 | 2020-09-29 | 上海蔚来汽车有限公司 | Charging facility and charging port guided charging method and device |
| CN109455106B (en) * | 2018-10-17 | 2022-07-26 | 国网浙江省电力有限公司杭州供电公司 | Intelligent charging station for electric automobile |
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